A kosher restaurant is an establishment that serves food that complies with Jewish dietary laws (kashrut). These businesses, which also include diners, cafés, pizzerias, fast food, and cafeterias, and are frequently in listings together with kosher bakeries, butchers, caterers, and other similar places, differ from kosher style establishments in that they operate under rabbinical supervision, which requires that the laws of kashrut, as well as certain other Jewish laws, must be observed. Such locations must be closed during Shabbat and Jewish holidays if under Jewish ownership.

In most cases, the location is limited to serving exclusively either dairy or meat foods. But some types of establishments, such as delicatessens, frequently serve both, kept in separate areas.Kosher restaurants exist in many cities that have Jewish communities. In cities with large Jewish populations, the choices in kosher dining available may be quite large. In the United States, New York City has the highest number of kosher restaurants, and in Canada, Toronto has the most.